Weekly pre-release

• New Features
  • HDR metadata support (HDR10 aka SMPTE-2086 aka CEA-861.3)
• Improvements
  • Psychovisual tuning (please tell us on #933 if it works for your use-cases)
• Bugfixes:
  • #890 Infinite loop on clips shorter than 10 frames
• New defaults:
  • Low latency OFF
  • Psychovisual ON

Weekly pre-release

First pre-release to help with the packaging effort (see #886)